Finding the Fourth Proportional to 151,174.74, 208,629.76 and 86,654.72

Step by Step Solution

1. Step 1: Write the proportion equation
   151,174.74 : 208,629.76 = 86,654.72 : x
2. Step 2: Convert to fraction form
   151,174.74/208,629.76 = 86,654.72/x
3. Step 3: Cross multiply
   151,174.74x = 208,629.76 × 86,654.72
4. Step 4: Simplify right side
   151,174.74x = 18,078,753,436.47
5. Step 5: Solve for x
   x = 18,078,753,436.47/151,174.74
6. Step 6: Final answer
   x = 119,588.45